Background sizing

#logo {
  background: url(images/awe300.png) center center no-repeat;
  background-size: 
    
      auto
      contain
      cover
      100%
    ;
}

Resize me! »

Multiple backgrounds

div {
  background: url(src/zippy-plus.png) 10px center no-repeat, 
              url(src/gray_lines_bg.png) 0 center repeat-x;
}
            

About Web Elements